EP1777703A3 - Fokussierungssteuervorrichtung und - Verfahren - Google Patents
Fokussierungssteuervorrichtung und - Verfahren Download PDFInfo
- Publication number
- EP1777703A3 EP1777703A3 EP06122289A EP06122289A EP1777703A3 EP 1777703 A3 EP1777703 A3 EP 1777703A3 EP 06122289 A EP06122289 A EP 06122289A EP 06122289 A EP06122289 A EP 06122289A EP 1777703 A3 EP1777703 A3 EP 1777703A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- information recording
- light beam
- objective lens
- focus
- recording medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0945—Methods for initialising servos, start-up sequences
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050097731A KR100717043B1 (ko) | 2005-10-17 | 2005-10-17 | 포커스 인입 제어 장치 및 포커스 인입 제어 방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1777703A2 EP1777703A2 (de) | 2007-04-25 |
| EP1777703A3 true EP1777703A3 (de) | 2007-06-20 |
Family
ID=37680541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06122289A Withdrawn EP1777703A3 (de) | 2005-10-17 | 2006-10-13 | Fokussierungssteuervorrichtung und - Verfahren |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070086291A1 (de) |
| EP (1) | EP1777703A3 (de) |
| JP (1) | JP2007115393A (de) |
| KR (1) | KR100717043B1 (de) |
| CN (1) | CN1953069B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4806309B2 (ja) * | 2006-08-08 | 2011-11-02 | オンセミコンダクター・トレーディング・リミテッド | フォーカスサーボ装置 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040179450A1 (en) * | 2001-07-03 | 2004-09-16 | Masahiro Mori | Optical disc reproduction method and optical disc reproduction apparatus |
| US20050002286A1 (en) * | 2001-04-24 | 2005-01-06 | Kabushiki Kaisha Toshiba | Optical disk apparatus and optical disk processing method |
| US20050162999A1 (en) * | 2003-01-20 | 2005-07-28 | Fujitsu Limited | Optical storage system and control method |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446240A (en) * | 1987-08-14 | 1989-02-20 | Toshiba Corp | Disk device |
| JPH05234241A (ja) * | 1992-02-20 | 1993-09-10 | Hitachi Ltd | 薄型情報処理装置 |
| JPH0765382A (ja) * | 1993-08-20 | 1995-03-10 | Matsushita Electric Ind Co Ltd | 光ディスク制御装置 |
| JPH09259449A (ja) * | 1996-03-22 | 1997-10-03 | Hitachi Ltd | 光学的情報記録再生装置の位置決め装置 |
| JPH1021571A (ja) * | 1996-07-05 | 1998-01-23 | Hitachi Ltd | ディスク再生装置の学習制御装置 |
| JP2000339712A (ja) * | 1999-06-02 | 2000-12-08 | Ricoh Co Ltd | 光ディスク装置 |
| JP2001236657A (ja) * | 2000-02-21 | 2001-08-31 | Toshiba Corp | 光ディスク読取装置及び光ディスク読取方法 |
| KR20010087634A (ko) * | 2000-03-08 | 2001-09-21 | 구자홍 | 광디스크 구동장치의 포커싱 제어방법 |
| KR100357239B1 (ko) * | 2000-03-13 | 2002-10-25 | 엘지전자 주식회사 | 광디스크 구동장치의 포커싱 제어방법 |
| JP2002222522A (ja) * | 2001-01-24 | 2002-08-09 | Matsushita Electric Ind Co Ltd | 情報ディスク記録再生装置、及び情報ディスク記録再生装置の振動検出方法 |
| JP2003030876A (ja) * | 2001-07-18 | 2003-01-31 | Toshiba Corp | 光ディスク装置及び光ディスク再生方法 |
| US6912184B2 (en) * | 2001-09-20 | 2005-06-28 | Hitachi-Lg Data Storage Korea, Inc. | Method and apparatus of measuring axial vibration of a disk recording medium |
| TWI220979B (en) * | 2003-04-30 | 2004-09-11 | Liteon It Corp | Method for determining unbalanced disks in CD-ROM |
| KR100555561B1 (ko) * | 2004-03-08 | 2006-03-03 | 삼성전자주식회사 | 광학 디스크 장치의 디스크 면진동에 적응적으로 동작하는고속 포커스 풀-인 제어부 및 포커스 제어 방법 |
| JP2005259248A (ja) * | 2004-03-11 | 2005-09-22 | Funai Electric Co Ltd | 光ディスク記録再生装置 |
-
2005
- 2005-10-17 KR KR1020050097731A patent/KR100717043B1/ko not_active Expired - Fee Related
-
2006
- 2006-09-28 US US11/528,623 patent/US20070086291A1/en not_active Abandoned
- 2006-09-30 CN CN2006101418250A patent/CN1953069B/zh not_active Expired - Fee Related
- 2006-10-13 EP EP06122289A patent/EP1777703A3/de not_active Withdrawn
- 2006-10-16 JP JP2006281571A patent/JP2007115393A/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050002286A1 (en) * | 2001-04-24 | 2005-01-06 | Kabushiki Kaisha Toshiba | Optical disk apparatus and optical disk processing method |
| US20040179450A1 (en) * | 2001-07-03 | 2004-09-16 | Masahiro Mori | Optical disc reproduction method and optical disc reproduction apparatus |
| US20050162999A1 (en) * | 2003-01-20 | 2005-07-28 | Fujitsu Limited | Optical storage system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070042003A (ko) | 2007-04-20 |
| JP2007115393A (ja) | 2007-05-10 |
| CN1953069A (zh) | 2007-04-25 |
| CN1953069B (zh) | 2010-09-22 |
| US20070086291A1 (en) | 2007-04-19 |
| KR100717043B1 (ko) | 2007-05-10 |
| EP1777703A2 (de) | 2007-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20061013 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
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| PUAL | Search report despatched |
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| AK | Designated contracting states |
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Extension state: AL BA HR MK YU |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: G11B 7/09 20060101ALI20070516BHEP Ipc: G11B 7/095 20060101ALI20070516BHEP Ipc: G11B 7/085 20060101AFI20070202BHEP |
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| 17Q | First examination report despatched |
Effective date: 20080124 |
|
| AKX | Designation fees paid |
Designated state(s): DE FR GB IT NL |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20120111 |